Jason Jones, of The Sacramento Bee, reports Oakland Raiders head coach Lane Kiffin said strength and conditioning coach Brad Roll has made a big impact on the improvement of many players on the team. Kiffin has noticed the physical improvement of several players during the offseason and he credits Roll with the progress.

Raiders.com reports the Oakland Raiders hired Brad Roll to be the team's strength and conditioning coach Friday, Feb. 1. Roll interviewed with Raiders head coach Lane Kiffin and reached an agreement with the team. Terms of the deal were not disclosed.